PDF WATERMARK

Add Watermark to PDF

Add text or a logo image to your PDF and customize the font, size and opacity.

Choose PDF FileDrop a file or click to choose. · Up to 50 MB / 200 pages

Files are processed only in your browser and are not sent to a server.

Edit Watermark

Watermark Settings

Text watermarkImage watermark

Watermark textUp to 160 characters / 4 lines font

Text size (pt)Text color

Watermark imagePNG · JPG · WebP / up to 10 MB

Choose a PNG image if you need a transparent background.

Image size 35%

Opacity 25%0% is invisible and 100% is opaque. Rotation -35° Position

Horizontal position 50%Vertical position 50%

Apply to pages Page rangeSeparate pages with commas and use hyphens for ranges.

Preview page

Drag on the preview or use the arrow keys to move the watermark.

Create a new PDF with your watermark and review it below.

Watermarked PDF

Review the result below, then download it or open another PDF tool.

Download Watermarked PDFAdd Stamp or Signature Edit PDF Text

If your browser cannot display the PDF, use the download button to view the file.

How to Add a Watermark to a PDF

Choose a PDF and select a text or image watermark.
Choose the font, text size and color, or the image size.
Adjust opacity, rotation, position and the target pages.
Choose Open Watermarked PDF, review the result and download it.

Text and Image Watermarks

Use a text watermark for notices such as confidential, draft, a company name or copyright. Use an image watermark for a brand logo or a custom mark. Apply one type at a time.

Keep the Original Document and Add a Watermark

A translucent watermark is added over the original pages. The original file is unchanged and a new PDF is saved. Text watermarks are added as transparent images that preserve the selected font.

Supports PDFs up to 50 MB and 200 pages. Complex documents may take longer depending on your device's memory and performance. Watermarks do not prevent copying or securely redact content.

Frequently Asked Questions

Are my PDF and watermark image uploaded to a server?

No. Your PDF and images are processed only in your browser's memory. They are not sent to or stored on Congdy Coding's server.

Can I change the font of a Korean text watermark?

Yes. Choose Nanum Gothic, Nanum Myeongjo or Nanum Pen Script and adjust text size, color and opacity. Long text is automatically scaled to fit the page.

Is a transparent image background preserved?

Yes. Transparent PNG backgrounds are preserved. You can also use JPG or WebP and adjust the image's overall opacity and size.

Can I watermark only certain pages?

Choose all pages, the current preview page or a custom page range. Enter ranges such as 1-3, 5.

Can I still search and copy the original PDF text?

The original pages are not converted to images; only a watermark is added. Originally searchable and copyable text remains intact. The new text watermark itself is added as a transparent image.

Does a watermark completely protect a PDF?

A watermark identifies a document's source or purpose. It does not prevent copying, permanently redact content or encrypt the file. Unlock password-protected PDFs before using this tool.

Related Tools

Image Color PickerUpload a photo, logo, or screenshot and click any point to extract HEX, RGB, and HSL values for free. A dominant color palette is generated automatically.Color Palette GeneratorEnter a base color or HEX code to create complementary, analogous, triadic, split-complementary, and monochromatic palettes for free. Click any color to copy it.Image Format ConverterConvert PNG, JPG, and WebP images for free. Adjust quality and the JPG background color, preview the estimated size, and keep files in your browser.Image ResizerResize a photo for free by setting its width, height, or scale. Preserve the aspect ratio, save as PNG, JPG, or WebP, and keep the file in your browser.Character CounterEnter text to instantly count characters with and without spaces, words, sentences, paragraphs, lines, and UTF-8 bytes. Use it free with no sign-up.IP Address CheckerCheck the public IP address of your current internet connection for free. See whether it is IPv4 or IPv6, view the connection country, and copy the address in one click.Global DNS CheckerEnter a domain and select countries to compare DNS A, AAAA, CNAME, MX, NS, TXT, and SOA records and response times around the world.PDF EditorRemove existing text from a PDF or place new Korean or English text exactly where you want it, then reorder, rotate, or delete pages and save a new PDF. Your file is never uploaded.Brighten Dark PhotosAdjust brightness, shadows, contrast, and saturation in dark photos for free. Compare before and after, then save as JPG, PNG, or WebP. Your photo is never uploaded.Online Stamp and Signature MakerCreate multiple stamp styles from a Korean or Hanja name, or sign directly with a mouse or finger. Save as a transparent PNG and use it in a PDF immediately.Add a Stamp or Signature to PDFPaste a transparent PNG stamp or signature into a PDF, or sign directly. Adjust its position, size, opacity, and rotation on any page, then save a new PDF.

Files are processed only in your browser. Double-check the downloaded result for important documents.